Shoe-last-remodeling machine



O. ULSON.

SHOE LAST REMODELING MACHINE.

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4 SHEETS-SHEET l.

WTNESSES A TTRNEYS 0. OLSON.

SHOE LAST REIVIODELING MACHINE.

APPLCATION FILED DEC.9.19 20.

Patented Jan. 3, 1922.

Arron/V573 0. OLSON.

SHOE LAST REMODELING MACHINE.

APPLICATION FILED DEC.9. 1920- Patented Jan. 3, 1922.

4 SHEETS-SHEET 3.

/N VEA/Tof? afval" 05.207. By 47W 15; mf ATTORNEYS I o. OLSON. l SHOE LAST REMODELING MACHINE.

APPLICATION FILED DEC-9. 1920. v 1 ,402,533, Patented Jan. 3, 1922.

4 SHEETS-SHEET 4.

A TTO/INEIS formity with the pattern last.

UNITED STATES PATENT OFT-loaf OSCAR OLSON, OF BROOKLYN, NEW YORK, ASSIGNOR TO OLSON MACHINE WORKS, ING., OF BROOKLYN, NEW YORK, A GORPORATION` OIF" NEW YORK.`

Specification of Letters Patent.

Patented Jan. 3', 1922.

Application mea December e, 1920. Serial No. 429,446.

To ajZZ whom t may concern.'

Be it known that I, OSCAR OLSON, a citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Shoe-Last-Remodeling Machine, of which the following is a full, clear, and exact description.

This invention relates to improvements in shoe last remodeling machines, an object of the invention being to provide a machine which will remodel a plurality of lasts in exact conformity with a pattern last and perform the work accurately and with a minimum of labor so that shoe lasts can be quickly, cheaply and accurately remodeled.

A further object is to provide improved mounting for the pattern and the lasts to be remodeled, which mounting is manually manipulated so as to cause the lasts to be presented to the cutters` and cut in exact con- As the style of shoes changes from year to year it is necessary to provide new lasts or to remodel old lasts and the operation of remodeling old lasts has heretofore been done by hand, the work being performed upon each last which requires considerable time and labor, and it is the purpose of my invention to provide a machine which will simultaneously remodel any desired number of lasts, thus greatly decreasing the cost of such remodeling operation and providing a more uniform and accurate last.`

With thesey and other objects in view the invention consists in certain novel features 0f construction, and combinations andarrangements of parts, as will be more fully hereinafter described and pointed out in the claims. L

In the accompanying drawings- Figure 1 is a view in front elevation of my improved last remodeling machine.

Figure 2 is a top plan view. l

Figure `3 is a 4view in vertical transverse section on the line 3 3 of Figure 2. y

Figure t is a fragmentary view onrthe same section as Figure 3, showing the upper portion of the machine .with the parts in a different position.

Figure 5 is an enlarged view in section showing the support ofone of the shoe lasts and its adjacent parts.

Figure 10 is a perspective view of th y gage 52.

1 represents a supporting frame which is provided at its upper end with a slightly inclined table 2 having bearing brackets 3 thereon providing mounting for shafts 4: on

`which rotary cutters 5 and sand wheels 6 are fixed. I have illustrated two of these shafts 4 and cooperating parts located adj acent the respective ends of the frame 1, but I would have it understood that I may provide any desired number in accordance with the number of lasts to be remodeled.

A pattern roll 7 having trunnions 8 thereon is supported in brackets 9 on the table 2 and is rendered vertically adjustable by means of set screws 10, so that this pattern roll may be adjusted in accordance with the pattern and lasts to be cut.

\ The shafts 4 are provided with pulleys 11 which are connected by belts 12 with pulleys 13 on a drive shaft 14 and the latter may be driven in any approved manner. I have illustrated as a driving means an electric motor'15 having its drive pulley 16 yconnected by a belt 17 with a pulley y18 on the shaft 14, which is a convenient power driving means.

19 represents a work supporting bed which is relatively long as shown clearly in AFigure 1, and which is provided at its ends with perforatedlugs 2O having rotary or partially rotary mounting on a rod 21. This rod 21 is supported at the yupper end of a pair of links22, the latter pivotally mounted at their lower ends on a rod 23 supported by the frame 1, so that the links 22y and the rod 21 form a pivoted frame which enables the work bed 19 to be moved toward and away from the vtable 2, as indicated in Figure 3. To limit this movementof the work bed and the framesupporting the same a rod 24 is projected through the links 22 and has its ends movable in slotted brackets 25 fixed to frame 1, and to limit thev pivotal or tilting the springs 47. s

angle arm 25 is fixed to one of theperforated lugs 2O and is ladapted to engage one of the links 22 which is illustrated most clearly in Figures 1 and 3.

The work bed 19 is provided with three last supporting mechanisms which are precisely' alike, and hence, the description hereinafter of one of such mechanisms will apply alike to all.

Each last support comprises a rocker shaftV 26 having rotary mounting in perforated lugs 27 on the bed 19 and extending transversely of the bed with the inner ends of said shaft recessed or cut away as shown at 28, and provided with transversely positioned sup-porting bars 29 secured to the shaft by set screws 30. These supporting bars 29 are adapted to receive the base or lowered forward portion of the last 31.

The shaft 26 is provided between the perforated lugs 27 with any desired number of openings 32 to receive in any of them a lug 33 on one end of an angle bracket 34. This angle bracket may constitute a gage on which a post 35 is adjustably secured by a set screw 36 and supports a clampingy screw 37 having a claw or grip 38 at its inner end engaging the heel of the last 31 and provided on its outer end with a handle 39 to turn the screw and force the last forwardly as far as may be desired. Y

The shaft 26 at its forward portion is provided with a depending pin 40 which is adapted to project through an opening 41 in the lower crossbar 42 of a last holding clamp 43. This bar 42 has a central recess 44 to receive and fit the shaft 26 and is made with upwardly projecting parallel rods `45 supporting a crossbar 46 which is movable thereon. Coiled springs 47 and 48 are located on the rods 45 above and below the crossbar 46, the `lower springs 48 being weaker than the upper springs 47 and serving to prevent'the crossbar 46 from falling downwardly when out of operative position. Nuts 49 are screwed onto the upper ends of the rods 45 so as to regulate the tension of A cam lever 50 is pivotally mounted-on the crossbar 46 and has a cam 51 at its end which is adapted to bear against the forward portion, which isthe instep portion of the last 31, and securely clamp the last on its holder or supporting means. This operation of the cam lever can be quickly performed so that the last can be easily and quickly removed or clamped in position. To insure an exact positioning of the last transversely of it-ssupport or holder I provide la gage 52 which is projected through a slot 53 in the shaft 26 Vand secured in any position of adjustment by means of a set screw 54. This gage 52 has a finger 55 at one end which en gages one side of the last 31 and serves to insure an exact positioning of the last. To enable the gage to operate effectively with both right and left lasts it is reversible from side to side as will be readily understood. All of the last supporting shafts26 are provided at their forward ends with depending crank arms 56 and these Icrank arms at their lower ends are connected by a link 57 having handholds 58 thereon which are adapted to be grasped by the operator to manually manipulate the last, as will more fully hereinafter iappear.

l/Vhile, of course, this invention is not limited to any particular number of last' hold ers which may be simultaneously operated in exact conjunction with the pattern, 1 have shown for purposes of illustration two last holders which are designed to support the lasts to be remodeled with the intermediate last holder designed to support the pattern last, and it is to be understood that the pattern last is of the shape that is designed to cut or remodel the other lasts.v

The operation is as follows: When the pattern last and the last to be remodeled are rmly and properly secured on their respective last holders as above described, the operator grasps the handhelds 58 and moves the work bed 19 from the dotted line position in Figure 3 toward the pattern roll 7 and the cutters 5 and by a forward movement of said handles and by a lateral movement of said handles, which, through the medium of the link 57 and crank arms 56, will cause a rocking or lateral tilting movement to beimparted to the lasts by reason of their mounting on the shafts 26, the lasts are presented to the cutters and the lasts are cut and remodeled in exact conforminyf with the pattern last. I Y

By reason of the pivotal mounting of the work bed 19, the rotary or partially rotary mounting of the shaft 26 supporting the-last and the tilting movement which is rendered possible by reason ofthe links 22 supporting the work bed, it is possible to impart to the lasts a practical universal'movement so that the entire surface of the last to be cut or remodeled, can be presented to the cutters and this work can be easily and quickly performed by a single operator manually manipulating the handholds 58. i

lifter the lasts are cut, the work bed .19 is given a movement longitudinally on the supporting rod 21 to position the lasts under the sand wheels 6 for the finishing operation, and it will be noted that the pattern roll 7 is of a length sufficient to maintain the pattern last in engagement therewith whether the lasts to be vremodeled are in engagement with the cutters or the sand wheels. As above ex-k.

plained, the pattern roll 7 is adjustable vertically so that it may accommodate and properly function in connection with pattern lasts of any size and shape.

- Various slight changes might be made in the genera-l form and arrangement of the parts described Without departing from the invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall Within the spirit,`

and scope of the appended claims.

l claim:

l. A shoe last remodeling machine,y comprisino' a support, cutters and a pattern roll on -the support, a pair of pivoted links, a rod connecting said links, means limiting the pivotal movement of the links, a Work bed pivotally mounted on the rod, last supports pivotally mounted on the Work bed, the axes of all of the pivotings being in parallel planes With the pivot of the last support at a right angle to the axes of the other pivotings, and a single operating device operably connected to the last supports, whereby said last supports may be simultaneously moved in all directions to present a pattern last to the pattern roll and other lasts to the cutters.

2, A shoe last remodeling machine, comprising a support, cutters and a pattern roll on the support, a pair of upwardly projecting pivoted links, a rod connecting said links at their upper ends, a Work bed pivotally mounted on the rod, last supports transversely positioned relative to the Work bed and pivotally mountedon the Work bed, the axes of all oi' the pivotings being in par* allel planes with the pivot of the last support at a right angle to the axes of the other pivotings, a single operating device operably connected to the last supports, whereby said last supports may be simultaneously moved in all directions to present a pattern last to the pattern roll and other lasts to the cutters.

3. A shoe last remodeling machine, comprising a support, cutters and a pattern roll on the support, a pair or upwardly pivotcd links pivotally connected to the supports and having` their upper ends in substantially the same horizontal plane as the cutters and the pattern roll, a rod connecting the upper ends oi' the links, means limiting the pivotal movement of the links, a. Work bed pivotally mounted on the rod, last supports pivotally mounted on the Work bed, the axes of all of the pivotings being in parallel planes with the pivot of the last support at a right angle to the axes of the other pivotings, a crank arm secured to one oli the last supports, and means operably connecting all of the last supports, whereby the 'movement of the crank arm operates to simultaneously move all of the last supports so as to present the lasts on the support uniformly to the pattern roll and the cutters.

Ll. A shoe last remodeling machine, comprising a support, aligned shafts on the support, cutters and sand rolls on the shafts, a pattern roll in line with the shafts, located betvveen the shafts and having adjustable mounting on the support, a pair of upwardly projecting links pivotally mounted at their loiver ends on said support, a rod connecting the upper ends ot said links, a rod extending through said links, slotted brackets into which the ends of said lastmentioned rod project limiting the pivotal movement of the links, a Work bed pivotally supported on the rod at the upper ends of said links, last supports pivotally mounted on the bed, and means operatively connecting all of the last supports and controlling the movement of the bed.

5. A shoe last remodeling machine, comprising a support, cutters and a pattern roll on the support, a movable Work bed, shafts supported by the Work bed and comprising last supports, a transverse bar on each shaft, a laterally projecting gage movably connected to each shaft, a rearwardly projecting bracket on each shaft, an adjustable post on each bracket arm, a clamping screw in each post,a clamp on each screv.T adapted to engage the heel portion of-a last, and a last clamp removably connected to each shaftv and adapted rto clamp the forward portion of a last. n y

6. A shoe last remodeling machine, comprising a support, cutters and a pattern roll on the support, a movable Work bed, shai'ts supported by the Work bed and comprising last supports, a transverse bar on each shaft, a laterally projecting gage'movably connectedfto each shaft, a rearwardly projecting bracket on each shaft, an adjustablev post on each bracket arm, a clamping screw in each post, a clamp on each screw adapted to engage the heel portion of a last, a pin. on

yeach shaft a crossba-r havin@` an oaenin 9 e l g therein receiving the pin, a pair of rods on the crossbar, an upper crossbar mounted on the rods, springs above and belo'u7 said lastiuentioned crossbar, and a cam lever on saidVv last-mentioned crossbar adapted to engage and clamp a last.

@SCAR OLSON.

lOO 

